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Old Beam Mine (Great Beam Mine), Bugle, Treverbyn, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 23' 36'' North , 4° 47' 59'' West
Latitude & Longitude (decimal): 50.39361,-4.80000
GeoHash:G#: gbuwdvbsp
UK National Grid Reference:SX010587
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


Situated in the north-western corner of the Goonbarrow China Clay Works, where some of the lodes were exposed. Otherwise known as Great Beam Mine.

Old Beam is known to have been at work before 1830, beginning life as a china clay works before working underground for tin.

Production records state that the mine raised 375 tons of tin between 1852-71. Work was suspended in 1872, with Beam finally closing in 1874.

Regions containing this locality

Devon and Cornwall metalliferous mining district, England, UK

Mining District - 752 mineral species & varietal names listed

St Austell Mining District, Cornwall, England, UK

Mining District - 252 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Cassiterite
Formula: SnO2
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Chalcocite
Formula: Cu2S
Description: Reported from tin lodes in the deepest part of the mine, together with olivenite (Smyth, Reeks & Rudler, 1864).
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386.
Olivenite
Formula: Cu2(AsO4)(OH)
Description: Reported from tin lodes in the deepest part of the mine, together with chalcocite (Smyth, Reeks & Rudler, 1864).
Reference: Smyth, W.M., Reeks, T., and Rudler, F.W. (1864): A Catalogue of the Mineral Collections in the Museum of Practical Geology. HMSO Publications (London), 190pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 532-533
Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 532-533
Quartz
Formula: SiO2
Reference: A&M photo
Quartz var: Amethyst
Formula: SiO2
Reference: A&M photo
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386.
Scorodite
Formula: Fe3+AsO4 · 2H2O
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 63
Talc
Formula: Mg3Si4O10(OH)2
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 532-533
Tenorite
Formula: CuO
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Dale foster Collection
Wavellite
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 532-533
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
Tenorite4.AB.10CuO
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite8.BB.30Cu2(AsO4)(OH)
Pharmacosiderite8.DK.10KFe3+4(AsO4)3(OH)4 · 6-7H2O
Scorodite8.CD.10Fe3+AsO4 · 2H2O
Wavellite8.DC.50Al3(PO4)2(OH,F)3 · 5H2O
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Talc9.EC.05Mg3Si4O10(OH)2
Topaz9.AF.35Al2(SiO4)(F,OH)2
Unclassified Minerals, Rocks, etc.
Limonite-(Fe,O,OH,H2O)
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Group 4 - SIMPLE OXIDES
AX
Tenorite4.2.3.1CuO
AX2
Cassiterite4.4.1.5SnO2
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Scorodite40.4.1.3Fe3+AsO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq
Olivenite41.6.6.1Cu2(AsO4)(OH)
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)3Zq·xH2O
Pharmacosiderite42.8.1a.1KFe3+4(AsO4)3(OH)4 · 6-7H2O
A3(XO4)2Zq·xH2O
Wavellite42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Amethyst
-SiO2
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H OliveniteCu2(AsO4)(OH)
H PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H ScoroditeFe3+AsO4 · 2H2O
H TalcMg3Si4O10(OH)2
H TopazAl2(SiO4)(F,OH)2
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O Quartz (var: Amethyst)SiO2
O CassiteriteSnO2
O KaoliniteAl2(Si2O5)(OH)4
O Limonite(Fe,O,OH,H2O)
O OliveniteCu2(AsO4)(OH)
O PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O ScoroditeFe3+AsO4 · 2H2O
O TalcMg3Si4O10(OH)2
O TenoriteCuO
O TopazAl2(SiO4)(F,OH)2
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
FFluorine
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al KaoliniteAl2(Si2O5)(OH)4
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al TopazAl2(SiO4)(F,OH)2
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si KaoliniteAl2(Si2O5)(OH)4
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TalcMg3Si4O10(OH)2
Si TopazAl2(SiO4)(F,OH)2
PPhosphorus
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SSulfur
S ChalcociteCu2S
KPotassium
K PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe ScoroditeFe3+AsO4 · 2H2O
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
CuCopper
Cu ChalcociteCu2S
Cu OliveniteCu2(AsO4)(OH)
Cu TenoriteCuO
AsArsenic
As OliveniteCu2(AsO4)(OH)
As PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
As ScoroditeFe3+AsO4 · 2H2O
SnTin
Sn CassiteriteSnO2
WTungsten
W Wolframite(Fe2+)WO4 to (Mn2+)WO4

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian - Carboniferous
251.902 - 358.9 Ma



ID: 2027014
Unnamed Igneous Intrusion, Carboniferous To Permian

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Felsic-rock

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Early Carboniferous
323.2 - 358.9 Ma



ID: 3192903
Paleozoic sedimentary rocks

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Ordovician
443.8 - 485.4 Ma



ID: 3150224
Ordovician granite

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Granite group

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Henwood, W.J. (1843): On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall. 5, 1-386.
Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 532-533.


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